CN114537340B - Speed control method and device for unmanned passenger car - Google Patents
Speed control method and device for unmanned passenger car Download PDFInfo
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- CN114537340B CN114537340B CN202210203404.5A CN202210203404A CN114537340B CN 114537340 B CN114537340 B CN 114537340B CN 202210203404 A CN202210203404 A CN 202210203404A CN 114537340 B CN114537340 B CN 114537340B
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- connecting ring
- speed
- brake
- passenger car
- communication hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
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Abstract
The invention discloses a speed control device of an unmanned passenger car, which comprises passenger car wheels, a transmission shaft, a speed controller and a brake disc, wherein the speed controller is arranged on the passenger car wheels; a speed controller is sleeved on the brake disc; four mounting plates are arranged in the inner ring of the fixed plate of the speed controller, brake pieces are arranged on the mounting plates, and the four brake pieces are respectively connected with the control piece; the inner ring of the first connecting ring of the control member is provided with a second connecting ring, the inner ring of the second connecting ring is provided with a third connecting ring, the second connecting ring is internally provided with a first communication hole, a second communication hole and a third communication hole respectively, the first connecting ring is communicated with the third connecting ring through the second connecting ring, and the third connecting ring is communicated with a hydraulic oil pipeline; the first connecting ring is connected with the oil inlet pipe of the brake piece through the communicating pipe, and the invention can correspondingly perform the work of primary speed reduction, secondary speed reduction and tertiary speed reduction according to the speed of the passenger car, thereby greatly improving the high efficiency and the sensitivity of speed control.
Description
Technical Field
The invention relates to the technical field of unmanned buses, in particular to a speed control method and device of an unmanned bus.
Background
Chinese patent CN105984340B discloses a vehicle speed control method and apparatus, which belongs to the field of vehicle control. The method comprises the following steps: acquiring the geographic position of a vehicle; inquiring speed limiting information according to the geographic position, wherein the speed limiting information is used for indicating the speed limiting of a road corresponding to the geographic position; and controlling the running speed of the vehicle not to exceed the limit speed. The speed limiting information indicating the speed limit of the road corresponding to the geographic position is inquired according to the geographic position, the running speed of the vehicle is controlled not to exceed the speed limit, the speed is automatically controlled according to the speed limit of the current road, active control of a user is not needed, the speed limit of the current road is prevented from being inadvertently exceeded when a driver drives the vehicle, and the effect of improving the driving safety is achieved;
in the prior art, when the speed of the automobile is controlled by the unmanned passenger car, the adopted devices are brake devices and systems used in the market, and the brake devices cannot realize graded speed reduction, so that the purpose of effectively controlling the speed cannot be achieved, and the problem of lower speed control efficiency of the passenger car exists.
Disclosure of Invention
The invention aims to solve the problems of the background technology, and provides a speed control method and device for an unmanned passenger car, which can correspondingly perform the work of primary speed reduction, secondary speed reduction and tertiary speed reduction according to the speed of the passenger car, thereby greatly improving the efficiency and the sensitivity of speed control.
The aim of the invention can be achieved by the following technical scheme:
the speed control device of the unmanned passenger car comprises passenger car wheels, a transmission shaft, a speed controller and a brake disc;
the wheels of the passenger car are connected with a transmission shaft, a brake disc is sleeved on the transmission shaft, and a speed controller is sleeved on the brake disc; four mounting plates are arranged in the inner ring of the fixed plate of the speed controller, brake pieces are arranged on the mounting plates, and the four brake pieces are respectively connected with the control piece;
the inner ring of the first connecting ring of the control member is provided with a second connecting ring, the inner ring of the second connecting ring is provided with a third connecting ring, the second connecting ring is internally provided with a first communication hole, a second communication hole and a third communication hole respectively, the first connecting ring is communicated with the third connecting ring through the second connecting ring, and the third connecting ring is communicated with a hydraulic oil pipeline; the first connecting ring is connected with an oil inlet pipe of the brake piece through a communicating pipe.
As a further scheme of the invention: the first connecting ring is rotationally connected with the second connecting ring, and the second connecting ring is fixedly connected with the third connecting ring.
As a further scheme of the invention: the first communication holes are provided one, the second communication holes are provided two, the third communication holes are provided three, and the first communication holes, the second communication holes and the third communication holes are not overlapped with each other.
As a further scheme of the invention: the two second communication holes are distributed along the diameter direction of the second connection ring.
As a further scheme of the invention: the three third communication holes are arranged on the second connecting ring in the form of isosceles triangle.
As a further scheme of the invention: the oil outlet pipe of the brake piece is connected with a hydraulic oil tank through a return pipe; the piston tube of the brake piece is symmetrically arranged in the mounting disc, and a brake block is arranged in the piston tube.
As a further scheme of the invention: the inner ring of the third connecting ring is provided with gear teeth and is connected with a driving gear in a meshed manner through the gear teeth, and the driving gear is connected with the output end of the driving motor.
A speed control method of an unmanned passenger car, comprising the steps of:
step one: when the speed of the unmanned passenger car reaches 0-60km/h and the brake control speed is needed, the second connecting ring is rotated, so that the first communication hole is communicated with the pipeline of one of the communication pipes, and one of the brake pieces works;
step two: when the speed of the unmanned passenger car reaches 60-120km/h, the second connecting ring 10 is rotated, so that the second communication hole is communicated with the pipelines of the two communication pipes, and the two brake pieces work;
step three: when the speed of the unmanned passenger car reaches more than 120km/h, the second connecting ring is rotated, so that the third communication hole is communicated with the pipelines of the three communication pipes, and the three brake pieces work.
The invention has the beneficial effects that:
when the speed sensor of the unmanned passenger car senses the running speed of the passenger car, a signal is transmitted to the hydraulic oil pump to carry out oil transportation according to the running speed of the passenger car, so that the brake piece correspondingly works to achieve the effect of controlling the speed; meanwhile, the third connecting ring is driven to rotate, the second connecting ring is driven to rotate, the first communicating hole, the second communicating hole and the third communicating hole on the second connecting ring are correspondingly communicated with the communicating pipe respectively, so that hydraulic oil can flow into the brake piece through the inner cavity of the third connecting ring, the communicating hole on the second connecting ring and the inner cavity of the first connecting ring, and the brake disc is clamped by the brake pad, so that the effect of reducing speed is achieved; the speed control device of the unmanned passenger car can correspondingly perform the work of primary speed reduction, secondary speed reduction and tertiary speed reduction according to the speed of the passenger car, thereby greatly improving the high efficiency and the sensitivity of speed control; and the four brake pieces can be switched to work mutually, so that the overall service life is ensured, and the safety of continuous running without replacing the brake pieces for a long time is ensured.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of the connection between a transmission shaft and a brake disc in the invention;
FIG. 3 is a schematic diagram of the speed controller of the present invention;
FIG. 4 is a schematic view of a brake assembly according to the present invention;
fig. 5 is a schematic structural view of a third connecting ring according to the present invention.
In the figure: 1. wheels of the passenger car; 2. a transmission shaft; 3. a speed controller; 4. a brake disc; 5. a fixed plate; 6. a mounting plate; 7. a brake member; 8. a communicating pipe; 9. a first connection ring; 10. a second connecting ring; 11. a third connecting ring; 12. a first communication hole; 13. a second communication hole; 14. a third communication hole; 15. an oil inlet pipe; 16. a piston tube; 17. a brake pad; 18. an oil outlet pipe; 19. gear teeth; 20. a driving gear.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 and 2, the invention relates to a speed control device of an unmanned passenger car, which comprises a passenger car wheel 1, a transmission shaft 2, a speed controller 3 and a brake disc 4;
the passenger car wheels 1 are connected with a transmission shaft 2, so that the passenger car wheels 1 are driven to rotate through the rotation of the transmission shaft 2, the passenger car can run, a brake disc 4 is sleeved on the transmission shaft 2, and a speed controller 3 is sleeved on the brake disc 4;
when the speed controller works, the rotation of the transmission shaft 2 is controlled by the speed controller 3, so that the speed of the passenger car is controlled;
referring to fig. 3, the speed controller 3 includes a fixed disc 5, a mounting disc 6, a brake member 7, and a control member; the fixed disc 5 is of an annular structure, four mounting discs 6 are arranged in the inner ring of the fixed disc 5, brake pieces 7 are arranged on the mounting discs 6, and the four brake pieces 7 are respectively connected with the control piece;
the section of the mounting plate 6 is of a U-shaped structure, and the mounting plate 6 is provided with a fastening bolt, and the brake piece 7 is a vulnerable piece, so that the brake piece 7 is convenient to take down and replace;
the control member comprises a communicating pipe 8, a first connecting ring 9, a second connecting ring 10, a third connecting ring 11, a first communicating hole 12, a second communicating hole 13 and a third communicating hole 14; the first connecting ring 9, the second connecting ring 10 and the third connecting ring 11 are arranged along the same circle center, the second connecting ring 10 is arranged on the inner ring of the first connecting ring 9, the third connecting ring 11 is arranged on the inner ring of the second connecting ring 10, the first connecting ring 9 is of a hollow structure, the second connecting ring 10 is of a non-hollow structure, a first communication hole 12, a second communication hole 13 and a third communication hole 14 are respectively arranged in the second connecting ring 10, the third connecting ring 11 is of a hollow structure, the first connecting ring 9 is communicated with the third connecting ring 11 through the second connecting ring 10, and the third connecting ring 11 is communicated with a hydraulic oil pipeline; the first connecting ring 9 is connected with an oil inlet pipe 15 of the brake piece 7 through a communicating pipe 8;
in the design, the first connecting ring 9 is rotationally connected with the second connecting ring 10, and in order to ensure the tightness of the first connecting ring, a connecting mode of a sealing bearing is adopted, and the second connecting ring 10 is fixedly connected with the third connecting ring 11; one first communication hole 12, two second communication holes 13, and three third communication holes 14; two second communication holes 13 are distributed along the diameter direction of the second connection ring 10, three third communication holes 14 are arranged on the second connection ring 10 in the form of isosceles triangle, wherein two third communication holes 14 are distributed along the diameter direction of the second connection ring 10, and the first communication holes 12, the second communication holes 13 and the third communication holes 14 are not overlapped with each other;
when the speed sensor of the unmanned passenger car senses the speed of the passenger car, the speed sensor transmits signals to the hydraulic oil pump to carry out oil transportation according to the speed of the passenger car, so that the brake piece 7 correspondingly works to achieve the function of controlling the speed; meanwhile, the third connecting ring 11 is driven to rotate, the second connecting ring 10 is driven to rotate, the first communication hole 12, the second communication hole 13 and the third communication hole 14 on the second connecting ring 10 are correspondingly communicated with the communication pipe 8 respectively, so that hydraulic oil can flow into the brake piece 7 through the inner cavity of the third connecting ring 11, the communication hole on the second connecting ring 10 and the inner cavity of the first connecting ring 9, and the brake disc 4 is clamped by the brake pad 17, so that the effect of reducing speed is achieved;
specifically, when the speed of the unmanned passenger car reaches 0-60km/h and a brake control speed is required, the second connecting ring 10 is rotated, so that the first communication hole 12 is communicated with the pipeline of one of the communication pipes 8, and at the moment, the pipelines of the other communication pipes 8 are in a closed state, so that only one brake piece 7 can work; when the speed of the unmanned passenger car reaches 60-120km/h, the second connecting ring 10 is rotated, so that the second communication hole 13 is communicated with the pipelines of two communication pipes 8, and the pipelines of other communication pipes 8 are in a closed state at the moment, so that only two brake pieces 7 can work; when the speed of the unmanned passenger car reaches more than 120km/h, the second connecting ring 10 is rotated, so that the third communication hole 14 is communicated with the pipelines of the three communication pipes 8, and the pipelines of the other communication pipes 8 are in a closed state at the moment, so that only three brake pieces 7 can work; therefore, the speed control device of the unmanned passenger car can correspondingly perform the first-stage speed reduction, the second-stage speed reduction and the third-stage speed reduction according to the speed of the passenger car, thereby greatly improving the high efficiency and the sensitivity of speed control; the four brake pieces 7 can be switched to work, so that the overall service life is ensured, and the safety of continuous running without replacing the brake pieces 7 for a long time is ensured;
referring to fig. 4, an oil outlet pipe 18 of the brake 7 is connected with a hydraulic oil tank through a return pipe; the brake piece 7 comprises a piston tube 16 and a brake block 17, the piston tube 16 is symmetrically arranged in the mounting plate 6, and the brake block 17 is arranged in the piston tube 16;
the oil inlet pipe 15 and the oil outlet pipe 18 are respectively distributed on two sides of the mounting plate 6, the oil inlet pipe 15 and the oil outlet pipe 18 are respectively communicated with the inner cavity of the piston pipe 16, and the piston pipes 16 on two sides are connected through a communication channel;
when in use, hydraulic oil flows into the inner cavity of the piston tube 16 through the oil inlet tube 15 to control the brake pad 17 to work, and the brake piece 7 has the advantage of simple structure;
referring to fig. 5, the rotation of the third connecting ring 11 is preferably in a gear driving mode, specifically, the inner ring of the third connecting ring 11 is provided with gear teeth 19, and is meshed with a driving gear 20 through the gear teeth 19, the driving gear 20 is connected with the output end of a driving motor, and the driving motor is installed on the fixed disc 5 through a bracket;
when the speed control device works, a speed signal of the passenger car is transmitted to the driving motor through the speed sensor, the driving motor is controlled to work, the driving gear 20 is driven to rotate, the driving gear 20 drives the third connecting ring 11 to rotate through the meshing effect, and accordingly the second connecting ring 10 is correspondingly rotated, different communication holes are switched according to different speed requirements, and different grades of speed control work is completed.
Example 2
A speed control method of an unmanned passenger car, comprising the steps of:
step one: when the speed of the unmanned passenger car reaches 0-60km/h and the brake control speed is needed, the second connecting ring 10 is rotated, so that the first communication hole 12 is communicated with the pipeline of one of the communication pipes 8, and the pipelines of the other communication pipes 8 are in a closed state at the moment, so that only one brake piece 7 can work;
step two: when the speed of the unmanned passenger car reaches 60-120km/h, the second connecting ring 10 is rotated, so that the second communication hole 13 is communicated with the pipelines of two communication pipes 8, and the pipelines of other communication pipes 8 are in a closed state at the moment, so that only two brake pieces 7 can work;
step three: when the speed of the unmanned passenger car reaches more than 120km/h, the second connecting ring 10 is rotated, so that the third communicating hole 14 is communicated with the pipelines of the three communicating pipes 8, and at the moment, the pipelines of the other communicating pipes 8 are in a closed state, so that only three brake pieces 7 can work.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (6)
1. The speed control device of the unmanned passenger car comprises passenger car wheels (1), a transmission shaft (2), a speed controller (3) and a brake disc (4); the passenger car wheel (1) is connected with a transmission shaft (2), a brake disc (4) is sleeved on the transmission shaft (2), a speed controller (3) is sleeved on the brake disc (4), and the passenger car wheel is characterized in that four mounting discs (6) are arranged in the inner ring of a fixed disc (5) of the speed controller (3), brake pieces (7) are arranged on the mounting discs (6), and the four brake pieces (7) are respectively connected with a control piece;
the inner ring of the first connecting ring (9) of the control member is provided with a second connecting ring (10), the inner ring of the second connecting ring (10) is provided with a third connecting ring (11), the second connecting ring (10) is respectively provided with a first communication hole (12), a second communication hole (13) and a third communication hole (14), the first connecting ring (9) is communicated with the third connecting ring (11) through the second connecting ring (10), and the third connecting ring (11) is communicated with a hydraulic oil pipeline; the first connecting ring (9) is connected with an oil inlet pipe (15) of the brake piece (7) through a communicating pipe (8);
the first connecting ring (9) is rotationally connected with the second connecting ring (10), and the second connecting ring (10) is connected with the third connecting ring (11);
one first communication hole (12), two second communication holes (13) and three third communication holes (14) are provided, and the first communication hole (12), the second communication hole (13) and the third communication hole (14) are not overlapped with each other.
2. A speed control device of an unmanned passenger vehicle according to claim 1, wherein two second communication holes (13) are distributed along the diameter of the second connecting ring (10).
3. A speed control device of an unmanned passenger vehicle according to claim 2, wherein three third communication holes (14) are arranged in the form of isosceles triangles on the second connection ring (10).
4. A speed control device of an unmanned passenger car according to claim 1, wherein the oil outlet pipe (18) of the brake member (7) is connected to the hydraulic tank via a return pipe; the piston tube (16) of the brake piece (7) is symmetrically arranged in the mounting disc (6), and a brake block (17) is arranged in the piston tube (16).
5. The speed control device of an unmanned passenger car according to claim 1, wherein the inner ring of the third connecting ring (11) is provided with gear teeth (19) and is in meshed connection with a driving gear (20) through the gear teeth (19), and the driving gear (20) is connected with the output end of the driving motor.
6. A speed control method of a speed control device of an unmanned passenger vehicle according to any one of claims 1 to 5, comprising the steps of:
step one: when the speed of the unmanned passenger car reaches 0-60km/h and the brake control speed is needed, the second connecting ring (10) is rotated, so that the first communication hole (12) is communicated with the pipeline of one of the communication pipes (8) to enable one of the brake pieces (7) to work;
step two: when the speed of the unmanned passenger car reaches 60-120km/h, the second connecting ring (10) is rotated, so that the second communication hole (13) is communicated with the pipelines of the two communication pipes (8) to enable the two brake pieces (7) to work;
step three: when the speed of the unmanned passenger car reaches more than 120km/h, the second connecting ring (10) is rotated, so that the third communication hole (14) is communicated with the pipelines of the three communication pipes (8) to enable the three brake pieces (7) to work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210203404.5A CN114537340B (en) | 2022-03-03 | 2022-03-03 | Speed control method and device for unmanned passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210203404.5A CN114537340B (en) | 2022-03-03 | 2022-03-03 | Speed control method and device for unmanned passenger car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114537340A CN114537340A (en) | 2022-05-27 |
| CN114537340B true CN114537340B (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210203404.5A Active CN114537340B (en) | 2022-03-03 | 2022-03-03 | Speed control method and device for unmanned passenger car |
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| Country | Link |
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| CN (1) | CN114537340B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970007722B1 (en) * | 1995-02-21 | 1997-05-16 | 대우전자 주식회사 | Control valve for anti-lock brake system of automobile |
| US7270149B2 (en) * | 2005-10-05 | 2007-09-18 | Mediland Enterprise Corporation | Rotary valve assembly |
| US9897154B2 (en) * | 2011-03-31 | 2018-02-20 | Gunite Corporation | Disk brake hub assembly |
| CN206874706U (en) * | 2017-06-26 | 2018-01-12 | 天津市职业大学 | Ring cloth friction disk type disk brake |
| DE102018221573A1 (en) * | 2018-12-12 | 2020-06-18 | Continental Teves Ag & Co. Ohg | Brake disc for a vehicle disc brake |
| CA3090543C (en) * | 2019-08-19 | 2023-08-08 | Ontario Drive & Gear Limited | Progressive steering system for an all-terrain vehicle |
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- 2022-03-03 CN CN202210203404.5A patent/CN114537340B/en active Active
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| CN114537340A (en) | 2022-05-27 |
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